3 Minutes

The Law of Conservation of Energy says that energy cannot be created or destroyed. BJ and Pete can use this law to understand why the Earth is heating up. Which combination of factors is causing the greenhouse effect? Click on the best explanation.

HINT: Warm objects give off infrared or heat radiation.


A) Infrared radiation passes through greenhouse gases, but visible light does not.

B) Visible light passes through greenhouse gases, but infrared radiation does not.

C) Both visible light and infrared pass through greenhouse gases.

D) Neither visible light nor infrared pass through greenhouse gases.
Please send any comments to:
Curator:
Tom.Benson@grc.nasa.gov
Responsible Official: Kathy.Zona@grc.nasa.gov